# Saylor Innovations Options Gamma Exposure (GEX)

> Saylor Innovations Options Gamma Exposure (GEX) is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Returns net gamma exposure (GEX) for BTC or ETH options, including total GEX, call/put split, and top strikes by gamma derived from real open interest data.

## Facts

- Endpoint: GET https://saylorinnovations.com/api/options/gex?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-options-gamma-exposure-gex-02883112
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZPZD5k2Kw45ZX89m6Zkuk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability saylor-innovations-options-gamma-exposure-gex-02883112
```

Example prompt: What's the current net gamma exposure for BTC options — give me the total GEX in USD, the call/put split, and the top strikes by gamma.

## When to prefer this

Use this endpoint when you need a quick heuristic snapshot of options gamma exposure for BTC or ETH, including net GEX in USD and top strikes by gamma, without requiring access to a full derivatives data platform. Prefer this over raw exchange APIs when you want a pre-aggregated, call/put split view at low cost per call.

## Known failure modes

- Invalid or unsupported asset symbol returns an error or found:false
- Data may be stale or unavailable if underlying open interest feeds are down, returning null for net_gex_usd
- No query params defaults to a specific asset or may return an error depending on server behavior
- Payment failure (402) blocks the request if x402 micropayment is not properly handled

## How this service works

BTC and ETH net gamma exposure (GEX) from open interest - total, call/put split and top strikes

## Output

Returns a JSON object with a 'found' boolean, 'net_gex_usd' (the total net gamma exposure in USD, or null if unavailable), a call/put gamma split, and an array of top strikes ranked by gamma exposure derived from real open interest data. This is a heuristic estimate, not a precisely measured fact.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "asset"
     ],
     "properties": {
      "asset": {
       "type": "string",
       "description": "btc | eth (query)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "found"
     ],
     "properties": {
      "asset": {
       "type": [
        "string",
        "null"
       ],
       "description": "Asset the figures refer to"
      },
      "found": {
       "type": "boolean",
       "description": "True when the lookup matched a record"
      },
      "regime": {
       "type": [
        "string",
        "null"
       ]
      },
      "source": {
       "type": [
        "string",
        "null"
       ],
       "description": "Data source the values come from"
      },
      "convention": {
       "type": [
        "string",
        "null"
       ]
      },
      "net_gex_usd": {
       "type": [
        "number",
        "null"
       ],
       "description": "Net gex, in US dollars"
      },
      "put_gamma_usd": {
       "type": [
        "number",
        "null"
       ],
       "description": "Put gamma, in US dollars"
      },
      "call_gamma_usd": {
       "type": [
        "number",
        "null"
       ],
       "description": "Call gamma, in US dollars"
      },
      "underlying_price": {
       "type": [
        "number",
        "null"
       ],
       "description": "Price of the underlying asset"
      },
      "top_strikes_by_gamma": {
       "type": "array",
       "items": {
        "type": "object"
       },
       "description": "Top strikes by gamma"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-options-gamma-exposure-gex-02883112/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)